Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By using the USDA zone info for Lake Havasu City you should be able to estimate when it's the best time to plant diascia.

Planting Calendar for Diascia

Frost tolerance for diascia:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Diascia do well in mild cold which means that you can plant them just a bit earlier in the year than other frost tender plants.

The earliest that you can plant diascia in Lake Havasu City is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant diascia and expect a good harvest is probably October. Any later than that and your diascia may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your diascia indoors.

Last Frost Date

The average date of last frost is January 31 in Lake Havasu City. You should expect an average low temperature of 30°F in the coldest months of winter.

Always keep in mind that USDA zone info for Lake Havasu City is not always accurate and the actual date of last frost will vary from year to year. Half of the time in Lake Havasu City it frosts late in the year after January 31 so always be ready to protect your diascia if you have a surprise late frost.

USDA Zone Info for Lake Havasu City

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Lake Havasu City

You may be interested in your other planting guides for Lake Havasu City.